HP Elite 7100 Maintenance & Service Guide: HP Elite 7100 Series Microtower - Page 67

Heat sink assembly

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Heat sink assembly The heat sink includes an attached fan. The entire assembly is removed together. 1. Prepare the computer for disassembly (Preparation for Disassembly on page 28). 2. Remove the access panel (Access Panel on page 29). 3. Lay the computer on its side with the rear facing toward you. 4. Disconnect the heat sink fan control cable (1) from the white system board connector labeled CPU_FAN1. 5. Loosen the four captive screws (2) that secure the heat sink to the system board. 6. Lift the heat sink from the processor and set it on its side to keep from contaminating the work area with thermal grease. CAUTION: Heat sink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenly seat the heat sink to the processor. This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board. When reinstalling an existing heat sink, make sure that its bottom has been cleaned with an alcohol wipe and fresh thermal grease has been applied to the top of the processor. New heatsinks come from the factory with fresh thermal grease already applied. Heat sink assembly 59

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Heat sink assembly
The heat sink includes an attached fan. The entire assembly is removed together.
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
28
).
2.
Remove the access panel (
Access Panel
on page
29
).
3.
Lay the computer on its side with the rear facing toward you.
4.
Disconnect the heat sink fan control cable
(1)
from the white system board connector labeled
CPU_FAN1.
5.
Loosen the four captive screws
(2)
that secure the heat sink to the system board.
6.
Lift the heat sink from the processor and set it on its side to keep from contaminating the work
area with thermal grease.
CAUTION:
Heat sink retaining screws should be tightened in diagonally opposite pairs (as in an X)
to evenly seat the heat sink to the processor. This is especially important as the pins on the socket
are very fragile and any damage to them may require replacing the system board.
When reinstalling an existing heat sink, make sure that its bottom has been cleaned with an alcohol
wipe and fresh thermal grease has been applied to the top of the processor. New heatsinks come
from the factory with fresh thermal grease already applied.
Heat sink assembly
59